P23638 · PSA3_YEAST
- ProteinProteasome subunit alpha type-3
- GenePRE9
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids258 (go to sequence)
- Protein existenceEvidence at protein level
- Annotation score5/5
Function
function
The proteasome degrades poly-ubiquitinated proteins in the cytoplasm and in the nucleus. It is essential for the regulated turnover of proteins and for the removal of misfolded proteins. The proteasome is a multicatalytic proteinase complex that is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. It has an ATP-dependent proteolytic activity.
Miscellaneous
Present with 17100 molecules/cell in log phase SD medium.
GO annotations
all annotations | all molecular function | virus receptor activity | dna binding | rna binding | cytoskeletal motor activity | catalytic activity | gtpase activity | structural molecule activity | transporter activity | cytoskeletal protein binding | lipid binding | cyclase activity | antioxidant activity | oxidoreductase activity | transferase activity | hydrolase activity | lyase activity | isomerase activity | ligase activity | protein tag activity | cargo receptor activity | histone binding | protein folding chaperone | translation regulator activity | nutrient reservoir activity | receptor ligand activity | molecular transducer activity | molecular adaptor activity | toxin activity | cell adhesion mediator activity | molecular function regulator activity | virus coreceptor activity | catalytic activity, acting on a protein | catalytic activity, acting on dna | catalytic activity, acting on rna | molecular carrier activity | transcription regulator activity | general transcription initiation factor activity | molecular sensor activity | molecular sequestering activity | atp-dependent activity | other molecular function | all biological process | mitotic cell cycle | cytokinesis | cytoplasmic translation | immune system process | muscle system process | circulatory system process | renal system process | respiratory system process | carbohydrate metabolic process | generation of precursor metabolites and energy | dna replication | dna repair | dna recombination | chromatin organization | dna-templated transcription | regulation of dna-templated transcription | trna metabolic process | protein folding | protein glycosylation | amino acid metabolic process | modified amino acid metabolic process | lipid metabolic process | vitamin metabolic process | sulfur compound metabolic process | intracellular protein transport | nucleocytoplasmic transport | autophagy | inflammatory response | mitochondrion organization | cytoskeleton organization | microtubule-based movement | peroxisome organization | lysosome organization | chromosome segregation | cell adhesion | establishment or maintenance of cell polarity | programmed cell death | photosynthesis | mrna metabolic process | snrna metabolic process | vesicle-mediated transport | reproductive process | digestive system process | signaling | cell differentiation | protein catabolic process | extracellular matrix organization | regulatory ncrna-mediated gene silencing | telomere organization | cell junction organization | wound healing | ribosome biogenesis | cilium organization | anatomical structure development | cell motility | nervous system process | endocrine process | protein maturation | transmembrane transport | nucleobase-containing small molecule metabolic process | hepaticobiliary system process | membrane organization | protein-containing complex assembly | cell wall organization or biogenesis | nitrogen cycle metabolic process | protein localization to plasma membrane | defense response to other organism | detoxification | meiotic nuclear division | mitotic nuclear division | mitochondrial gene expression | carbohydrate derivative metabolic process | other biological process | all cellular component | nuclear chromosome | extracellular region | extracellular space | cell wall | nucleus | nuclear envelope | nucleoplasm | chromosome | nucleolus | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | lipid droplet | microtubule organizing center | cytosol | ribosome | cytoskeleton | plasma membrane | cilium | plastid | thylakoid | external encapsulating structure | extracellular matrix | cytoplasmic vesicle | organelle | other cellular component | |||
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Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Cellular Component | nucleus | |
Cellular Component | proteasome complex | |
Cellular Component | proteasome core complex, alpha-subunit complex | |
Cellular Component | proteasome storage granule | |
Biological Process | proteasomal ubiquitin-independent protein catabolic process | |
Biological Process | proteasome core complex assembly | |
Biological Process | proteasome-mediated ubiquitin-dependent protein catabolic process |
Enzyme and pathway databases
Protein family/group databases
Names & Taxonomy
Protein names
- Recommended nameProteasome subunit alpha type-3
- Alternative names
Gene names
Organism names
- Strains
- Taxonomic lineageEukaryota > Fungi > Dikarya > Ascomycota > Saccharomycotina > Saccharomycetes > Saccharomycetales > Saccharomycetaceae > Saccharomyces
Accessions
- Primary accessionP23638
- Secondary accessions
Proteomes
Organism-specific databases
PTM/Processing
Features
Showing features for chain, cross-link.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000124116 | 1-258 | Proteasome subunit alpha type-3 | |||
Sequence: MGSRRYDSRTTIFSPEGRLYQVEYALESISHAGTAIGIMASDGIVLAAERKVTSTLLEQDTSTEKLYKLNDKIAVAVAGLTADAEILINTARIHAQNYLKTYNEDIPVEILVRRLSDIKQGYTQHGGLRPFGVSFIYAGYDDRYGYQLYTSNPSGNYTGWKAISVGANTSAAQTLLQMDYKDDMKVDDAIELALKTLSKTTDSSALTYDRLEFATIRKGANDGEVYQKIFKPQEIKDILVKTGITKKDEDEEADEDMK | ||||||
Cross-link | 100 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) | ||||
Sequence: K | ||||||
Cross-link | 199 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) | ||||
Sequence: K | ||||||
Cross-link | 231 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) | ||||
Sequence: K |
Keywords
- PTM
Proteomic databases
PTM databases
Interaction
Subunit
The 26S proteasome consists of a 20S proteasome core and two 19S regulatory subunits. The 20S proteasome core is composed of 28 subunits that are arranged in four stacked rings, resulting in a barrel-shaped structure. The two end rings are each formed by seven alpha subunits, and the two central rings are each formed by seven beta subunits. The catalytic chamber with the active sites is on the inside of the barrel.
Binary interactions
Type | Entry 1 | Entry 2 | Number of experiments | Intact | |
---|---|---|---|---|---|
BINARY | P23638 | PRE10 P21242 | 3 | EBI-13967, EBI-13963 | |
BINARY | P23638 | PRE2 P30656 | 3 | EBI-13967, EBI-14001 | |
BINARY | P23638 | PRE8 P23639 | 4 | EBI-13967, EBI-13959 | |
BINARY | P23638 | RPN11 P43588 | 2 | EBI-13967, EBI-11219 |
Protein-protein interaction databases
Miscellaneous
Structure
Sequence
- Sequence statusComplete
- Length258
- Mass (Da)28,714
- Last updated1991-11-01 v1
- ChecksumB43BB05233A01A9E
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
M63851 EMBL· GenBank· DDBJ | AAA34907.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
X56730 EMBL· GenBank· DDBJ | CAA40054.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
Z72920 EMBL· GenBank· DDBJ | CAA97148.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
BK006941 EMBL· GenBank· DDBJ | DAA08228.1 EMBL· GenBank· DDBJ | Genomic DNA |